Warp stop motion for looms



June 3 1924- J. G. AHLIN ET AL WARF STOP MOTION FOR LOOMS Fi ied June 2a L--il 1 1 '-1 LM Patented `lune 3, 1924.

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HSIG-NUES. TO'CROMPTON & KNOWLES LOOM `V/`ORKS,

OF WORCESTER, TJIASSACHU- `.'l'llTs, A CORPORATION OF MASSACHUSETTS.

'WAR-P STOF vMOTION FOR LOOMS.

application aieasrune 2s, i923. yserial No. 648,340.

Z 10 f/.ZZ whom t may concern.'

Be it known that we, JOHN Gr. AHLIN and' LESLIE D. PnN'rECos'r, both citizens of the United States, both residing at VVorcesuter, in the county of lVorcestera-nd State of Massachusetts, have invented a new and useful larp Stop Motion for Looms, of which the following is a specification.

rlhis invention relates to a warp stop motion whiclrmay be of the general type shown in the prior patent to Regan, No. 1,265,112, issued May 7,1918.

More specifically our invention relates to improvements inthe end Vframe construction shown in another patent to Regan, No. 1,375,729, issued April 6, 1921. 1n the latter patent, the end plates of the stop motion frame are provided with detachable supporting .members or brackets to receive the ends of the drop wire separator ars.

It is the object of our invention to improve the construction therein shown by providing detachable members or brackets which are less liable to injury and which more kreadily adapt themselves to variations and inaccu acies in the end plates to which they are attached.

lVith this general object in view, one feature of our invention relates to the provision of a supporting member or bracket formed of sheel metal or other yieldable material which will adapt itself without breakage to variations in the end plates.

Another feature of our invention relates to the provision of separated bearing projections for the supporting members, these bearing projections engaging the end plates at three points only in the preferred construct-ion.

Qur invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is f' shown in the drawings in which Fig. 1 is a sectional elevation of a stop motion of the gene-ral type shown in the Regan patents noted;

Fig. 2 is a plan View of an end plate and supporting` member;

Fig. 3 is a bottoni View thereof with said member distorted;

Fig. L1' is a perspective view of one 'of the supporting` members or brackets;

Fig. 5 is an end view of the parts shown in Fig. a; 'and Fig. '6 is a sii'nllar view showing thesupporting :member in distorted position.

Referring to the drawings, we have shown an'end plate 10,a plurality of drop wire separator-'bars 11, a plurality of vibrator bars 12, and certain operatingmechanism forming'no part of 'our present invention. The end plate 10 is provided with projecting portions 13 at each side forn'ii'ng shoulders 14 which deteri'ni'uethe elevation ofthe sup porting members or b'rac'ketsl'.

Each bracket 15 is preferably formed from a single piece of sheet metal bent to the shape best shown in Fig. 4- and having hooks 16, bearing lugs 17, 13 and 19, slots 2() for the separator bars 11 and lugs or projections 21 forming enlarged surfaces upon which the ends of the separator bars 11 are supported.

1t will be noted that the bearing projections 17, 18 and 19 are widely separated and that adjacent bearing projections are out of alignment with each other. The member 15 thus has a three-point engagement with the end plate 10, which engagement adapts it to more readily conform to an irregular plate. v

Furthermore, the use of a vieldable material such as sheetl steel for the members 15 permits the brackets to be somewhat distorted without breakage when they are applied to plates which have an uneven surface or which are of unequal thickness. This partial distortion of the supporting members is indicated in Figs. 3 and 6, which illustrate the effect of applying a supporting member to an uneven surface.

It should further be noted that the projections 21, while affording an increased surface for the separator bars, are not of sufli cient length to engage the end plates, as shown in Fig. 5. 1f the projections 13 of the end plate 10 are of unusual thickness, the hooks 16 readily yield sufficiently to embrace the projections, whereas under similar conditions the cast iron brackets previously used were frequently broken.

Having thus described our invention and the advantages thereof, We do not Wish to be limited to the details herein disclosed other- Wise than as set forth in the claims, but what We claim is l. In a Warp stop motion, a pair of end plates, a plurality of separator bars, and means to support the ends of said bars on said plates, said means comprising supporting members detachably secured to said end plates and each having a three-point engagement- With the face of the adjacent plate.

2. In a Warp stop motion, a pair of end plates, a plurality of separator bars, and means to support the ends of said bars on said plates, said means comprising supporting members detachably secured to said end plates and engaging the face of said plates only at points substantially spaced apart, withv each point of kengagement out of direct alignment with the next adjacent points of engagement.

3. In a Warp stop motion, a pairiof end plates, a plurality of separator bars, and means to support the ends of said bars on said plates, said means comprising supporting members detachably securedto said end plates and formed of yielda'ble material, said members thereby adapting themselves to slight inaccuracies in the surface and thickness of said end plates.

4L. In a Warp stop motion, a pair of end plates, a plurality of separator bars, and means to support the ends of said bars on said plates, said means comprising supporting members formed ot sheet material and detachably secured to said end plates and said members having integral portions thereof bent to form bearing projections and attaching hooks for said members.

5. In a Warp stop motion, a pair of end plates, a plurality of separator bars, and means to support the ends of said bars on said plates, said means comprising supporting members formed of sheet material and detachablly secured to said end plates and having integral portions thereof bent to form enlarged supporting surfaces for said separator bars.

In testimony whereof We have hereunto affixed our signatures.

JOHN Gr. AI-ILIN. LESLIE D. PENTICCOST. 

